A STUDY OF MAGNETOTELLURIC SOUNDING IN THE MIDDLE SEGMENT OF THE LONGMENSHAM STRUCTURAL BELT
ZHANG Zhen-yu1, WANG Xu-ben2, FANG Hui1
1. Institute of Geophysical and Geochemical Exploration, CAGS, Langfang 065000, China;
2. College of Geophysical, Chengdu University of Technology, Chengdu Sichuan 610059, China
Abstract：With multifunction instrument V8 generated by Phoenix Company in Canada, the authors carried out magnetotelluric sounding study in the middle section of Longmenshan structural belt, and used advanced data processing and interpretation of electromagnetic technology to analyze magnetotelluric sounding (MT) profile data. At the same time, the profile was analyzed by the qualitative analysis method (Mohr circle analysis, polarization diagram analysis) and the interpretation of magnetotelluric sounding. It is concluded that the overall performance of the profile is two-dimensional, and the anisotropy and three-dimensional nature are relatively strong in the fracture sub-region. It is also inferred that the source location of the Wenchuan Magnetude-8 Earthquake that occurred in May 12, 2008 was in the footfall of Yinxiu fault.
张振宇, 王绪本, 方慧. 龙门山构造带中段大地电磁测深研究[J]. 物探与化探, 2012, 36(3): 377-381.
ZHANG Zhen-yu, WANG Xu-ben, FANG Hui. A STUDY OF MAGNETOTELLURIC SOUNDING IN THE MIDDLE SEGMENT OF THE LONGMENSHAM STRUCTURAL BELT. Geophysical and Geochemical Exploration, 2012, 36(3): 377-381.
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